程序包 com.mysql.cj.protocol.a

类 SimplePacketReader

java.lang.Object

com.mysql.cj.protocol.a.SimplePacketReader

所有已实现的接口:

MessageReader<NativePacketHeader,NativePacketPayload>

public class SimplePacketReader
extends Object
implements MessageReader<NativePacketHeader,NativePacketPayload>

Simple implementation of MessageReader which handles the receiving of logical MySQL packets from the provided socket input stream. Multi-packets are handled outside of this reader.

字段概要

字段

修饰符和类型	字段	说明
protected RuntimeProperty<Integer>	maxAllowedPacket
protected SocketConnection	socketConnection

构造器概要

构造器

构造器	说明
SimplePacketReader(SocketConnection socketConnection, RuntimeProperty<Integer> maxAllowedPacket)

方法概要

修饰符和类型	方法	说明
byte	getMessageSequence()	Get last message sequence number, as it was stored by MessageReader.readHeader().
NativePacketHeader	probeHeader()	Read the next message header from server, possibly blocking indefinitely until the message is received, and cache it so that the next MessageReader.readHeader() return the same header.
NativePacketPayload	probeMessage(Optional<NativePacketPayload> reuse, NativePacketHeader header)	Read message from server into to the given Message instance or into the new one if not present and cache it so that the next MessageReader.readMessage(Optional, MessageHeader) return the same message.
NativePacketHeader	readHeader()	Read the next message header from server, possibly blocking indefinitely until the message is received.
NativePacketPayload	readMessage(Optional<NativePacketPayload> reuse, NativePacketHeader header)	Read message from server into to the given Message instance or into the new one if not present.
void	resetMessageSequence()	Set stored message sequence number to 0.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 com.mysql.cj.protocol.MessageReader

pushMessageListener, readMessage, start, stopAfterNextMessage, undecorate, undecorateAll

字段详细资料

socketConnection

protected SocketConnection socketConnection

maxAllowedPacket

protected RuntimeProperty<Integer> maxAllowedPacket

构造器详细资料

SimplePacketReader

public SimplePacketReader(SocketConnection socketConnection,
                          RuntimeProperty<Integer> maxAllowedPacket)

方法详细资料

readHeader

public NativePacketHeader readHeader()
                              throws IOException

从接口复制的说明: MessageReader

Read the next message header from server, possibly blocking indefinitely until the message is received.

指定者:

readHeader 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

MessageHeader of the next message

抛出:

IOException - if an error occurs

probeHeader

public NativePacketHeader probeHeader()
                               throws IOException

从接口复制的说明: MessageReader

Read the next message header from server, possibly blocking indefinitely until the message is received, and cache it so that the next MessageReader.readHeader() return the same header.

指定者:

probeHeader 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

MessageHeader of the next message

抛出:

IOException - if an error occurs

readMessage

public NativePacketPayload readMessage(Optional<NativePacketPayload> reuse,
                                       NativePacketHeader header)
                                throws IOException

从接口复制的说明: MessageReader

Read message from server into to the given Message instance or into the new one if not present. For asynchronous channel it synchronously reads the next message in the stream, blocking until the message is read fully. Could throw CJCommunicationsException wrapping an IOException during read or parse

指定者:

readMessage 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

参数:

reuse - Message object to reuse. May be ignored by implementation.

header - MessageHeader instance

返回:

Message instance

抛出:

IOException - if an error occurs

probeMessage

public NativePacketPayload probeMessage(Optional<NativePacketPayload> reuse,
                                        NativePacketHeader header)
                                 throws IOException

从接口复制的说明: MessageReader

Read message from server into to the given Message instance or into the new one if not present and cache it so that the next MessageReader.readMessage(Optional, MessageHeader) return the same message. For asynchronous channel it synchronously reads the next message in the stream, blocking until the message is read fully. Could throw CJCommunicationsException wrapping an IOException during read or parse

指定者:

probeMessage 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

参数:

reuse - Message object to reuse. May be ignored by implementation.

header - MessageHeader instance

返回:

Message instance

抛出:

IOException - if an error occurs

getMessageSequence

public byte getMessageSequence()

从接口复制的说明: MessageReader

Get last message sequence number, as it was stored by MessageReader.readHeader().

指定者:

getMessageSequence 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>

返回:

number

resetMessageSequence

public void resetMessageSequence()

从接口复制的说明: MessageReader

Set stored message sequence number to 0.

指定者:

resetMessageSequence 在接口中 MessageReader<NativePacketHeader,NativePacketPayload>